Parallel tongue and picker stick check for looms



Oct. 13, 1953 J. c. CROLCKERV 2,655,183

PARALLEL TONGUE AND PICKER sncx CHECK FOR LOOMS Fil ed Sept. 16, 1952 2 Sheets-Sheet 1 ROCKER JOHN c ICIVVENTOR.

45 44 BY L ATTORNEYS 06L 13, 1953 J c CROCKER 2,655,183

PARALLEL TONGUE AND PICKER STICK CHECK FOR LOOMS Filed Sept. 16, 1952 2 Sheets-Sheet 2 ATTORNEYS.

Patented Oct. 13, 1953 UNITED STATES PATENT OFFICE PARALLEL TONGUE AND PICKER STICK CHECK FOR LOOMS This invention relates to an improved parallel tongue adapted to be associated with the usual parallel motions of a loom.

It is an object of this invention to provide an improved parallel tongue adapted to be fixed to the usual picker stick and the parallel shoe with means connecting the parallel tongue to the oscillating stand or foot on which the shoe has rocking movement in unison with the picker stick to maintain the parallel shoe in constant pivotal or rocking relationship with the oscillating parallel.

It is another object of this invention to provide a parallel tongue of the character described having a substantially U-shaped portion on the lower end thereof, the opposite legs of which straddle and slidably engage a transverse shaft carried by the oscillating parallel stand or foot and wherein spring means, in the form of a compression spring disposed in a well or cavity in the lower portion of the substantially U-shaped portion of the parallel tongue engages said transverse shaft or pin and thereby urges the parallel shoe into engagement with the upper surface of the oscillating stand or foot. Since the parallel shoe is curved on the lower surface thereof and the spring means is disposed at approximately the center of the curve, this spring tends to urge the lowest point of the curve into engagement with the oscillating stand or foot and thereby tends to resiliently maintain the picker stick in a substantially vertical optimum position to thereby assist the usual picker stick check, or, as a matter of fact, the spring means may be of such strength as to entirely preclude the necessity of a conventional picker stick check being used at all.

However, in the event that the conventional type of picker stick check is provided, which type of picker stick check is usually carried by the lay of the loom immediately below the shuttle box, it is evident that the improved parallel tongue and the spring means associated therewith will substantially increase the useful life of the picker stick check above that of the picker stick checks heretofore employed.

Some of the objects of the invention having V 2 parallel motion embodying the improved parallel tongue and looking at the left-hand side of'the lower portion of Figure l;

Figure 3 is an enlarged fragmentary plan view showing the picker stick in cross-section and being taken substantially along the line 3-3in Figure 1;

Figure 4 is a longitudinal vertical sectional view taken along the line 4-4 in Figure 3, but showing the picker stick, the parallel tongue and the parallel shoe rocked to a different position from that shown in Figures 1, 2 and 3;

Figure 5 is a view similar to Figure 1 but showing a modified form of parallel tongue in association with the parallel motion;

Figure 6 is an enlarged fragmentary end elevation of the parallel motion looking at the lefthand side of the lower portion of Figure 5;

Figure 7 is an enlarged top plan view showing the picker stick in cross-section and being taken substantially along the line 11 in Figure 5;

Figure 8 is a longitudinal vertical sectional view through the parallel motion taken substantially along the line 88 in Figure 7 and illustrating particularly how the improved parallel tongue can be used without the spring means associated therewith and to still maintain the parallel shoe in proper engagement with the oscillating parallel stand or foot.

Referring more specifically to the drawings, the numeral [0 indicates'a loom frame carrying the usual lay rocker shaft l I, to which is secured an oscillating stand or foot [2.

In the form of the invention shown in'Figures 1 to 4, inclusive, the usual spring actuated drum having a strap extending therefrom to the picker stick is omitted, since it is not used in this instance. The oscillating'parallel stand has a flattopped outwardly extending plate portion I3 in tegral therewith which is provided with an opening I 4 through which the lower portion of the conventional picker stick l5 loosely extends. The

lower portion of the picker stick l5 also loosely extends through an opening IS in a conventional parallel shoe [6 having a curved lower surface H which rocks longitudinally upon the oscillating stand I2, and also oscillates therewith, as is customary. The picker stick I5 is fixed to the parallel shoe It by a bolt 20 which penetrates an upwardly projecting portion 2| integral with the shoe [6 and said bolt 20 also penetrates a conventional washer 22 which serves to clamp the picker stick [5 against the upwardly extending portion H of the parallel shoe I6. Of course, the improved tongue, to be presently described,

and the parallel shoe l6 and eing Sll11g1j cured to the inner surface of the pickerstick I by a bolt 26. The leg 33 of the parallel tgngue 30 really forms a J-shaped nembgr an d refer: ably provided with flanges 34 -(in opposed sides thereof between which the lower portignpf the picker stick l5 fits. The upper end of the inner {of th we sel19 Yde rest M 4*? f y t than that s gn 1 a es against or in losely space on we; is t s s nate :Ll :Q the P ral e F-F lport qn 3i l1d th lower sur ia f the i csi finea t a svst i k in the tamer the invention shown in nes i cl ive he. was Al i pr i es wit ra t a -esi 'w l 1 sa in a 1 he {Qiuncturblqf bus (ri id! slidab'ljy a trees-te s ere-nag 1 i "fi epri uise treatise? aise 1 ernsje h 1391s, g 1 disea s t e -tia f e i na .l e of the disk 33 is e g a 1.1mm

i awed b th 1:, uii'efln nn r h' P g y-7 m iseeens fip wa t e m eree l l u sa hi as i tensif es ftlb j new eup per surface:

ion

4 position to be engaged by the shuttle when boxed or when discharged from the shuttle box and, of course, this has caused undue wear of the curved surface I! of the parallel shoe 5. Also, the spring 3'. associated with the parallel tongue obviates the necessity of providing the usual heel strap, spring, spring shell and stud of the parallel motion thus providing a parallel motion which may beimuch more ecpnomically produced than the usualf'types If parallel inotions andobviating the necessity of replacing the usual heel strap l periodically.

It is evident that the position of the picker stick s methane tongue 30 may be adjusted rela'tiveto the shoe l6 by means of a set screw ,ifi whi chthrgadably penetrates the upper portion of the upwardly extending projection or portion -21 of' tlri' parallel .shbe I6 and bears against the cgrresppnding surface of the leg or arm 33 of thfir'allel tongue 30, the adjustment screw 46 amed he roper 129s nby a o "came 'th l p "ad ustmen wen known snap I des begiitp yi zl lsi fets thetthe igeie fi bee to :Modiflednr ascend fem vw. the inception In Figures 5 to 8, inclusive, there is shown a modified fdrrn o fparlll'tbh gli' "lifiiifi "a faith "t e eeiivi n'gn i partner mane? those parts tr the parallel 'ii onn" wnienhfaye been described heretofore with respect to 'the original form of theiiive'ntion 'n Figu'rs i"throughi ifinclusivej will bear "the 's in referene' characters 'th'e 'foiinfof'lt "invention shwn-in Flgures-{dto s, inclusive, with the prime notatibnadddf Also, thi fdiiri of paranel 'tofiife sllown ifl Figures-1S to 8; ihiil l'l siv, substantiaiuy 'siinilafto' the'pa'rallel tfiilg li sl'iWIf ifi Figl fi s 1 through yililuiif, with eibfifiiijfifll at the compression spring :31, aiidith' wen poruo'n ar e bmitte d i fl ffillilqf th i hVeiltib IfSHfiivTl 'in Figures 1 51156 8; inclusive; ahdftfieriore; the modifiediorrn'ofparalleltongii liil also-bear the same reference characters astn'e fblfrlbf iiafalll rorm shownwin Figuresll m4, ineiusivej'wnh tne prime notation added. Y M

The modified form of parallel tongue -30 is particularly provid dio facilitatetlie use of the conventional heel strap and 'tli'e usual spring means associated therewith for noniiaiiy the lower end of the pickersti'k l5 inwar'dly toward the lqomffra'me'fllf and for, conversely, normally urging. the up perend 6f the picker stick -5 adjacent the ilSliLl nd'iilalte 'oftll Shuttle box. -Fhe conventional-heel strap-50-is fixed on-the belt 320 f a between the picker stick washer 2 2 and the .lo'uter surface of the' picker stick t5"'and "-is .thus clamped 4 to the'outer surface of the" picker istickilfi'iin the usual manner. l he hel strap 'ill extends r inwardly and approximately surrounds .alconi/tentional lspringlshell 5] .to' whicli'the 5 heel ..strap islsuitably ..secured and which 'shell -51. is oscillatably mounted .on astud 52 carried Icy/the oscill'ating,. aralleLs'tandeorhfdot 1-27 -A conventional. torsion spring 53 l is also mounted 'on said stud-.52 land normally 'urge'sthe spring shelLSl in a countereclockwise,direction in Figure 8.;to

33' integral therewith. However, the yoke portion 3| of the parallel tongue 30 is devoid of the well portion and a spring and associated parts such as that shown in Figure 4 and indicated by the reference character 35, 38, 44 and 45, inclusive. Thus, the modified form of parallel tongue 30' does not function to maintain the picker stick I5 in a substantially vertical position as does the form of parallel tongue 30, however, the legs or arms 32 and 33 thereof engage opposite surfaces or substantially diametric opposed surfaces of the bushing 4| to thereby maintain the parallel shoe in proper relation to the upper surface of the oscillating stand or foot l2 during operation thereof. This insures that the portion of the heel strap 50 which is disposed against the outer surface of the picker stick 15 cannot swing outwardly relative to the oscillating parallel stand 12' as heretofore has been the case, and thus prevents the outer portion or wall of the opening l4 in the oscillating parallel stand 12 from cutting or damaging the heel strap 50.

Of course, this also insures that the curved lower surface [1' of the parallel shoe I6 will merely rock against the upper surface of the oscillating parallel stand l2, rather than sliding thereagainst, with a resultant smoother operation and thereby lengthening the useful life of the parallel shoe I6.

Although other stabilizing devices have heretofore been provided in association with the parallel motions, they have been relatively complicated and cumbersome and thus costly in manufacture as compared to the embodiment of the parallel tongue of the instant invention.

In the drawings and specification there has been set forth a preferred embodiment of the invention, and although specific terms are employed, they are used in a generic and descriptive sense only and not for purposes of limitation, the scope of the invention being defined in the claims.

Iclaim:

1. An improvement in a parallel motion for picker sticks in a loom having a oscillatable parallel provided with an elongated longitudinally extending slot through which the picker stick extends and having an oscillatable shoe mounted on the parallel and having an elongated slot through which the picker stick passes and means for securing the picker stick to the shoe, the improvement comprising a bolt spanning the slot in the parallel, a J-shaped member disposed in said slots and having its longer leg secured to the picker stick and shoe and having the lower portion of the longer leg and the shorter leg disposed on opposed sides of said bolt in the parallel.

2. An improvement in a parallel motion for picker sticks in a loom having an oscillatable parallel provided with an elongated longitudinally extending slot through which the picker stick extends and having an oscillatable shoe mounted on the parallel and having an elongated slot through which the picker stick passes and means for securing the picker stick to the shoe, the improvement comprising a bolt spanning the slot in the parallel, a J-shaped member disposed in said slots and having its longer leg secured to the picker stick and shoe and having the lower portion of the longer leg and the shorter leg disposed on opposed sides of said bolt in the parallel, and spring pressed means in the lower portion of the J-shaped member engaging the lower surface of said bolt for urging the shoe against the parallel.

3. An improvement in a parallel motion for picker sticks in a loom having an oscillatable parallel provided with an elongated longitudinally extending slot through which the picker stick extends and having an oscillatable shoe mounted on the parallel and having an elongated slot through which the picker stick passes and means for securing the picker stick to the shoe, the improvement comprising a bolt spanning the slot in the parallel, a J-shaped member disposed in said slots and having its longer leg secured to the picker stick and shoe and having the lower portion of the longer leg and the shorter leg disposed on opposed sides of said bolt in the parallel, the lower end of the J-shaped member having a well therein and resilient means mounted in the well and urged upwardly against the lower side of said bolt.

4. An improvement in a parallel motion for picker sticks in a loom having an oscillatable parallel provided with an elongated longitudinally extending slot through which the picker stick extends and having an oscillatable shoe mounted on the parallel and having an elongated slot through which the picker stick passes and means for securing the picker stick to the shoe, the improvement comprising a bolt spanning the slot in the parallel, a member secured to the front edge of the picker stick and extending through the slots in the shoe and parallel and having a transverse opening in its lower end penetrated by said bolt.

5. An improvement in a parallel motion for picker sticks in a loom having an oscillatable parallel provided with an elongated longitudinally extending slot through which the picker stick extends and having an oscillatable shoe mounted on the parallel and having an elongated slot through which the picker stick passes and means for securing the picker stick to the shoe, the improvement comprising a bolt spanning the slot in the parallel, a member secured to the front edge of the picker stick and extending through the slots in the shoe and parallel and having a transverse opening in its lower end penetrated by said bolt and resilient means in said member secured to the front side of the picker stick engaging the lower side of said bolt for urging the shoe against the parallel.

JOHN C. CROCKER.

Brouwer Sept. 3, 1946 

